Remote control device



1935- P. E. G. JENSEN REMOTE CONTROL DEVICE Filed Aug. 15, 1931 2SheetsSheet l m s H NW N N 0 E. VE%A WL w P REMOTE CONTROL DEVICE Oct.22, 1935.

2 Sheets-sheaf. 2

Filed Aug 15, 1931 N NENTOR PAUL 5.6. JENSEN ATTORNEY Patented Oct. 22,1935 UNITED STATES PATENT OFFICE REMOTE CONTROL DEVICE DelawareApplication August 15, 1931, Serial No. 557,407

1 Claim.

This invention relates to the remote control of amplifiers such as areused in the recording and reproduction of sound pictures and the like,and has for its principal object the provision of an improved apparatusand method of operation whereby the operation of one or more amplifiersmay be readily controlled from any desired point. A further object isthe provision of means whereby the adjustments made from a remote pointmay be observed by the operator who eflects such adjustments. A stillfurther object of the invention is to provide an improved remote controlapparatus which is of simple construction and readily operated toproduce fine adjustments in the apparatus controlled.

My invention will be better understood from the following descriptionwhen considered in connection with the accompanying drawings, and itsscope will be pointed out in the appended claim.

Referring to the drawings:

Fig. 1 illustrates diagrammatically the remote control apparatus asapplied to a controlled device; and,

Fig. 2 is a perspective view illustrating certain features and variousparts of the device to be controlled.

The control device includes a motor III which is supplied with singlephase current through the terminals I I, a phase splitter l2, a switchprovided with contact members l3 and I4, and a stop switch provided withcontact members l5 and I6 arranged to cooperate with a pin ll mounted ona gear l8. 7

The motor It has mounted on its shaft a pinion l9 which is coupled tothe gear 18 through a plurality of gears 20 to 22. Also mounted on thesame shaft 23 as the gear 22 is a gear 24 arranged to cooperate with adrive member or chain 25 through which a gear 26 is driven. Ashereinafter explained, the shaft 23 and the shaft 21 of the gear 26 areconnected to the controlled devices which may be, for example, resistorsconnected in the circuits of diiferent amplifiers.

Mounted upon the shaft 28 of the gear i8 is a contact member 29 which isarranged to cooperate with a plurality of contacts 30 mounted upon asupport 3i. It will be observed that the con- .tacts 30 are connected toa series of lamps or like indicating devices 32 mounted on a member 33,and that these lamps are connected on one side through a common terminal34 to a suitable source of current supply 35.

In order that the controlled device may be controlled from differentpoints, terminals 36 are provided. It will be readily understood that 5these terminals may be connected with a switch having contacts similarto the contacts l3 and I4. As indicated by the broken line, the controlswitch and indicating device are not located at the same point as theremainder of the apparatus. 10

The construction of the control apparatus is shown in Fig. 2. Forpurposes of manual control a knob 31 is mounted on the end of the shaft23. The practical embodiment of the device also includes a gear member38 interposed between the 1; gears 20 and 2|. In order to simplify thedrawings this gear member has been omitted in Fig. 1. As will be readilyunderstood, the lower ends of the shafts 21 and 23 are connected to thedevices to be controlled, these shafts being driven togo gether throughthe chain 25. As illustrated in Fig. 2, an indicating element similar tothat previously described may be utilized to indicate the adjustment ofthe apparatus connected to the shaft 21. For this purpose a member 39provid- 35 ed with a contact member similar to 29, may be arranged tocooperate with contacts interconnected with the contacts 30 through thecable 40.

It will be readily understood that adjustment of the apparatus in onedirection is effected by Q0 closure of the contact l3 and adjustment inthe opposite direction is effected by closure of the contact l4, andthat the effect of each adjustment may be readily observed by theoperator of the reversing switch.

Having thus described my invention and the operation thereof, what Iclaim is:

A control unit for sound picture apparatus, including means foradjusting a control of said apparatus at the apparatus, means foractuating the 4.0 adjusting means comprising a reversible motor,

a reversing switch in the audience for controlling the operation of saidmotor, manual means at said adjusting means for actuating the adjustingmeans independent of said motor, and 5 luminous means adjacent saidapparatus and visible from said reversing switch for indicating theposition of the adjusting means.

PAUL E. G. JENSEN. 5o

